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v3.19.1

Basis of Presentation - Summary of Company's Investments in Equity Accounted Investees (Detail) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Basis of Presentation [line items] |  |
Jurisdiction of incorporation | Israel |
Whistler [member] |  |
Basis of Presentation [line items] |  |
Jurisdiction of incorporation | Canada |
Proportion Of Ownership Interest In Associate | 19.00% | 20.30%
Cronos Australia Limited [member] |  |
Basis of Presentation [line items] |  |
Jurisdiction of incorporation | Australia |
Ownership interest | 50.00% |
MedMen Canada [member] |  |
Basis of Presentation [line items] |  |
Jurisdiction of incorporation | Canada |
Ownership interest | 50.00% |
Cronos GrowCo [member] |  |
Basis of Presentation [line items] |  |
Jurisdiction of incorporation | Canada |
Ownership interest | 50.00% |
NatuEra S.à r.l [member] |  |
Basis of Presentation [line items] |  |
Jurisdiction of incorporation | Luxembourg |
Ownership interest | 50.00% |

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